The qt5 plugin implements two rendering paths: the default but experimental QPainter based one and the Cairo based one, which is also used by all other Unix plugins. This bug is used to track QPainter based problems. Cairo bugs should be tagged for KDE.
Steps to Reproduce:
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You can can run qt5 with cairo by setting SAL_VCL_QT5_USE_CAIRO.
(In reply to Jan-Marek Glogowski from comment #0)
> The qt5 plugin implements two rendering paths: the default but experimental
> QPainter based one and the Cairo based one, which is also used by all other
> Unix plugins. This bug is used to track QPainter based problems. Cairo bugs
> should be tagged for KDE.
..., i.e. the KDE meta bug 102495